using System;
using System.IO;
using Xunit;
using ytLive.ViewModels;

namespace ytLive.Tests;

/// <summary>
/// Editing during a session is the creator's call (ruling 2026-11-12: moving a layer or resizing a
/// webcam mid-show is theirs to do). The setting decides whether go-live still flips EDIT off.
/// </summary>
[Collection("MainViewModelLayoutPath")]
public class EditWhileLiveTests
{
    private static MainViewModel NewVm(string db, out Action cleanup)
    {
        MainViewModel.LayoutPathOverride = db;
        cleanup = () =>
        {
            MainViewModel.LayoutPathOverride = null;
            try { File.Delete(db); } catch (IOException) { }
        };
        return new MainViewModel();
    }

    [Fact]
    public void Editing_stays_available_during_a_session_unless_the_creator_locked_it()
    {
        var db = Path.Combine(Path.GetTempPath(), $"llamacasty-editlock-{Guid.NewGuid():N}.db");
        var vm = NewVm(db, out var cleanup);
        try
        {
            Assert.False(vm.LockEditWhileLive);              // unlocked ships as the default
            Assert.True(vm.IsEditMode);

            // Unlocked: a session neither takes EDIT away nor gives it back.
            vm.EditingActive = false;
            vm.ApplyEditLockForSession(starting: true);
            Assert.False(vm.EditingActive);
            vm.EditingActive = true;
            vm.ApplyEditLockForSession(starting: true);
            Assert.True(vm.EditingActive);

            // Locked: go-live turns EDIT off…
            vm.LockEditWhileLive = true;
            vm.ApplyEditLockForSession(starting: true);
            Assert.False(vm.EditingActive);
            Assert.False(vm.IsEditMode);

            // …and stopping restores it, but only because the lock took it away.
            vm.ApplyEditLockForSession(starting: false);
            Assert.True(vm.EditingActive);
            Assert.True(vm.IsEditMode);

            // The choice survives a restart: a second view model on the same profile reads it back.
            var reloaded = new MainViewModel();
            Assert.True(reloaded.LockEditWhileLive);
        }
        finally
        {
            cleanup();
        }
    }
}